Door-closer



(No Model.)

B. W. DAILY. DOOR CLOSER. 4 Patented Sept. 27, 1892.

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ETI-IAN 7. DAILY, OF KANSAS CITY, KANSAS.

DOOR-CLOSER.

SPECIFICATION forming part of Letters Patent No. 483,140, datedSeptember 27, 1892.

Application filed January 11, 1892. Serial No. 417,723. (No model.)

To all whom it may concern.-

Be it known that I, ETHAN W. DAILY, of Kansas GityflVyandotte county,Kansas, have invented certain new and useful Improvements inDoor-Closers,of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to devices for automatically closing the doors ofhouses, apartments, and similar structures; and the object of myinvention is to produce a doorcloser which shall be simple, strong,durable, and comparatively inexpensive in construction and theoperating-spring of which shall be effectively protected against injuryby contact with external objects.

A further object of my invention is to produce a door-closer which shallalso be capable of ready application to and removal from doors andsimilar structures of a great variety of types.

To the above purposes my invention consists in certain peculiar andnovel features of construction and arrangement, as hereinafter describedand claimed.

In order that my invention may be fully understood, I will proceed todescribe it with reference to the accompanying drawings, in which Figure1 is a side elevation of the lower part of a door and its frame orcasing with my improved doorcloser applied thereto. Fig. 2 is ahorizontal section of the same on the line 2 2 of Fig. 1. Fig. 3 is adetached perspective view, on an enlarged scale, of the guide-bracket ofthe device and certain of its operative connections. Fig. 4: is asimilar view of the pivot-bracket of the device, showing the main rod ofthe device connected to said bracket.

In the said drawings, 1 designates a door, which may be of the usual orany preferred type and which may be either an outside door of a buildingor an inner door of one of the apartments of such building ora door inany other usual or preferred situation.

2 designates the frame or casing of the door 1, and 3 one of the hingesby which the door is connected to its casing.

4 designates a bracket-plate, which is preferably of approximatelytriangular form, as

shown, but which may be of any other suitable or preferred shape, andwhich is shown as provided at its apexand at its two remaining angleswith holes ,6, through which are inserted screws 5 or equivalent devicesfor securing the bracket-plate in position upon the casing 2. Thisbracket-plate is shown as secured to that part of the casing to whichthe hinges 3 are connected. The said bracket plate is preferablyattached to the lower part of the casing 2, and upon its outer side,near its larger end, the bracket-plate 4 is formed or otherwise providedwith two parallel horizontal arms 7, which extend outwardly at rightangles from the plate, the outer ends of said arms being preferablyrounded off, as shown. Through the outer ends of the two bracket-arms 7extends a vertical pivot-bolt or pintle S, which is embraced loosely byone end of the main rod 9 of the device, the said end of the rod beingeither bent around the bolt or pintle 8, as shown, or otherwise formedto loosely surround the bolt or pintle 8.

1O designates the guide bracket-plate, said plate being preferably ofsimilar form to the plate 4 and provided at its apex and its tworemainingangles with holes 11, through which are inserted screws 12 orequivalent devices, which secure the plate upon the door. Thisbracket-plate is shown as secured to that side of the door toward whichthe door moves while being opened, and also as placed directly oppositethe bracket-plate4 in a horizontal line therefrom.

Upon the outer side of the bracket-plate 10, at its larger end, areformed or otherwise secured two parallel bracket-arms 13, which extendhorizontally outward at right angles from the plate 10, the outer endsof said arms being also preferably rounded off. Through the outer endsof these two bracket-arms extend two vertical parallel bolts or rivets14, each of which is surrounded by a roller 15. Each of these rollers 15is of such length as to fit easily between the two bracket-arms 13, andeach is arranged to turn freely upon its bolt or rivet 14, theperipheries of said rollers being grooved, as shown. The main rod 9 ofthe device is of such length as to extend at its outer or free endbetween the rollers at all times whether the door is opened or closed.

,,18, said screw-threaded portion beginning 16 designatesabearing-plate,which is shown as formed integrally with the outer partof the arms 13 at that side of the same which is toward thebracket-plate 4. This bearingplate is preferably of the rectangular formshown and is formed centrally with a horizontally-elon gated opening orslot 17, the center of which is in exact alignment with the middle ofthe space between the two rollers 15, and the main rod 9 of the deviceextends through said openings, as shown. The main rod 9 is externallyscrew-threaded, as shown at near that end of the rod which surrounds thebolt or pintle 8 and extending toward or entirely to the opposite end ofthe rod. Upon this screw-threaded portion 18 is placed an adjustablebearing-nut 19, which surrounds the rod 9, as shown. The said rod 9 isalso surrounded by a spiral spring 20, which is of such length as toabut at one end against the outer side of the bearing-plate 16 and atits opposite end against the outer end of a sleeve 21 at all times,whether the door 1 is opened door to be fully opened before the bearing.

plate 16 comes into contact with the adjacent end of the sleeve, and itis to be observed that by turning the nut 19 in one or the op-'positedirection the sleeve 22 can be set so as to permit the door to beopened fully or partially, as desired.

I It will be seenfrom the above description that when the door is openedthe bearingplate 16 will compress the spring 20, as shown in dottedlines in Fig. 2, and that when the door is released the expansive actionof the spring 20, acting against the bearing-plate 16,

will automatically close the door.

It will be understood that the pin 8, which is surrounded by the outerend of the main rod 9, is to be set into one or anotherpair of a numberof oppositely-disposed holes 24,

which are formed through the bracket-arms 7 of the bracket-plate 4, thearrangement thus being such that greater or less leverage is given tothe rod 9, as desired. It is to be further understood that a similarnumber of 0p positely-disposcd pairs of holes 25 is formed in thebracket-arms 13 of the bracket-plate 10 and that the pins 14 can each beset in one or another of said pairs of holes, thus also increasing ordecreasing the leverage of the rod 9, as desired. Finally, it is to beobserved that,it desired, the pins 14 maybe set loosely in the holes 25,so as to revolve axially therein, thus permitting the rollers 15 toeither be used or dispensed with, as preferred.

From the above description it will be seen that I have produced adoor-closer which is simple, strong, durable, and inexpensive inconstruction, which operates automatically to close the door, the springof which is effectively protected against injury by contact withexternal objects, and which can be readily attached to and removed fromdoors of various types and in various situations.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

A door-closer comprising a bracket having a pair of outwardly-extendingparallel arms provided with a number of oppositely-disposed openings, asecond bracket also provided with a pair of outwardly-extending parallelarms which are also provided with a number of oppositely-disposedopenings, a pin or pintle inserted removably through one pair ofopenings of the first bracket-arms, an operating-rod loosely surroundingsaid pin and externally screw-threaded near such point of connectionwith the pin, a pair of pins inserted through two pairs of openings inthe arms of the second bracket, peripherallygrooved rollers surroundingsaid pins, the free end of the operating-rod extending between saidrollers, a nut screwed adjustably upon the threaded end of theoperating-rod, a cylindrical casing surrounding said part of the rod andhaving an internal end flange abutting against the nut, a spiral springsurrounding the rod and inclosed within the casing and also abuttingagainst the end flange thereof, and a bearing-plate having a horizontalslot to receive the free end of the rod and formed upon one side of thebracket-arms of the second bracket and also serving to receive thethrust of the spring, substantially as set forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

ETHAN W. DAILY.

Witnesses:

J NO. L. OoNDRoN, G. Y. THORPE.

IIO

